Archibald l



No Model.)

- A. L. BOLLES.

REVOLVING WINDOW SASH.

No. 554,231] Patented Feb. 11, 1896.

i l i '?*--a-, 5 4 Jf/ 0 4, M I 2., IN I E IV 70/? ATTORNEYS UNTTEDSTATES PATENT OFFICE.

AROIIIHALD L. BOLLES, OF BROOKLYN, NEWV YORK, ASSIGNOR OF ONE-HALF TOFRANK O. KOIIART, OF SAME PLACE.

REVO LVING WIN DOW-SASH.

SPECIFICATION forming part of Letters Patent No. 554,231, dated February11, 1896.

Application filed July 5, 1395- Serial No. 554,995. (No model.)

To caZZ whom it may concern: tically-movable stiles or bars K. Thestiles Be it known that I, AROHIBALD L. BOLLES, or bars K are preferablyof the same length a citizen of the United States, residing at the as awindow-sash with which they are concity of Brooklyn, in the county ofKings and nected, and secured to these stiles or bars in 5 State of NewYork, have invented anew and any preferred manner are the cords M, byuseful Improvement in WVindow-Sashes, of which the windows aresupported, said cords which the following is a specification, refcrbeingconnected with weights N, arranged in cnce being bad to the accompanyingdrawhousings at the sides of the frame in the ings, forming apartthereof, in which similar usual manner. 10 letters of referencedesignate like or equiva- Each of the stiles or bars K is provided on.lent part-s wherever found throughout the its outer side with aplurality of springs 0, several views. which are preferably three innumber, one at My invention relates particularly to imeach end and onein the middle, and these provelnents in the supports for window springs,or the upper and lower ones, are 6 5 I 5 sashes, and the object thereof'is to provide adapted to bear upon the inner surface of the meanswhereby the sashes may be revolved sides of the frame. so as to providemeans for the proper venti- The springs O are plate-springs, and thelation of apartments, and also to provide ends of the upper and thelower springs are supports for window-sashes which are propreferablydirected outwardly and the convex 2o vided with counterbalance-weightsand which surface thereof inwardly, and the ends of the maybe raised orlowered and which may also middle springs are preferably directed inberevolved at any point at which they may wardly and the convex surfacethereof outbe supported; and with these and other obwardly, and passingthrough to the middle jects in View the invention consists in thesprings are the pivot-pins P, by which the 25 construction, combination,and arrangement window-sashes are supported, said pins being of partshereinafter described and claimed. secured in the sash-frames andrevoluble in The invention is fully disclosed in the folthe said stilesor bars and in the springs lowing specification, of which theaccompathrough which they pass and being provided nying drawings form apart, in which with heads on their outer ends which hold 0 Figure 1 is aside elevation of a windowthe springsin place. frame, together with thewindow-sashes The central portions of the inner vertical mountedtherein, said window-sashes being sides of the stiles or bars K areconvex in supported according to my invention and the cross-section, asclearly shown at R in Figs. upper sash being slightly tilted on itspivotal 2, 3, and 4, and the corresponding parts of the 8 5 5 supports;Fig. 2, a section on the line 2 2 of sides of the frames of thewindow-sashes are Fig. 1; Fig. 3, a section on the line 3 3, and concavein cross-section, as shown at S in Fig. 4 a section on the line 4 at.Figs. 1, 3 and 4, and when the window-sashes In the drawings formingpart of this speciare closed, as shown at the lower part of Fig.fication, A represents the verticalbars of the 1 and in cross-section inFig. 3, the vertical 4o usual windowframes, B the top thereof, andconvex portions of the stiles or bars fit Within 0 the bottom, and theside bars A are prothe vertical concave portions of the sides of 'videdwith the usual beads or strips D, E, and the window-sashes, and there isa narrow F, between which the separate sashes are space between thestiles or bars and the sides mounted, and in the practice of myinvention of the frames, as shown at T in Figs. 1 and 3. 5

5 I support the separate sashes of the windows, The stiles or bars K areof such depth as to which are shown at G and H, in the following projectbeyond the beads or strips D, E and manner: F, and whenever it isdesired to open or re- The separate vertical beads or strips D and volveone of the sashes on its supports it is F form two vertical spaces, inwhich the only necessary to catch hold of either the 50 sashes aremounted in the usual manner, and lower or upper end thereof and to pullinin each of these vertical spaces 1 place verwardly or shove outwardlythereon, as will be readily understood, and this operation will resultin turning the sash on its pivotal supports, as shown in Figs. 1, 2 and4, and in this operation the stiles or bars K are forced outwardly, soas to fill, or nearly fill, the space T between the same and the sidesof the window-frame, and by reversing this operation the sash may bereturned to the closed position, in which position the stiles or bars Kwill be forced inwardly by the springs O, as shown in Figs. 1 and 3.

It will be understood, of course, that either of the sashes, the upperor the lower one, may

be turned or revolved independentlypf the other, or that both of saidsashes may be turned or revolved together, and it will also beunderstood that when it is desired to revolve the lower sash it must beraised, so that the lower side thereof will be freed from the strips orbeads of the bottom of the frame, and when it is desired to revolve theupper sash the same must be lowered, so that it will be removed from thestrips or beads at the top of the frame, which are not shown.

In the construction herein described, the pivot-pins P, or the outerends thereof, are secured to the central springs O, and said pivot-pinsare free to slide in both the stiles or bars K and the sides of theframes of the window-sashes, as will be readily understood, and byreason of the vertical convex central portion of the outer side stilesor bars K, and the corresponding vertical concave central portion of theouter sides of the frames of the sashes, the operation of revolving thesaid sashes is rendered simple and effective, and the sashes are heldstationary and securely at any desired point by means of pressureexerted by the springs O, and in these features of construction myimprovement differs from all devices of this kind heretofore employed.

Having fully described my invention, I claim and desire to secure byLetters Patent- 1. In combination with awindow-frame, of the usual form,of the vertically-movable stiles or bars having a convex outer surface,cords attached to weights passing over rollers or pulleys in the frameof the window, the opposite end of said cord being attached to saidstiles, window-sashes having a concave longitudinal groove in the edgesthereof adapted to receive the convex portion of said stiles, flatsprings secured at each end and the middle of said stiles, pivot-pinspassing through said stiles and said middle springs and connectin g thevertically-movable stiles and the frame of the sash, whereby said sashmaybe tilted in any position, substantially as described.

2. In combination with awindow-frame, of the usual form,of thevertically-movable stiles or bars having a convex outer surface, cordsattachedto weights passing over rollers or pulleys in the frame of thewindow, the opposite end of said cord being attached to said stiles,window-sashes having a concave longitudinal groove in the edges thereofadapted to receive the convex portion of said stiles, fiat springssecured upon the ends of said stiles, having a concave portion thereoftoward the frame of the window and amiddle spring having a concaveportion thereof extending toward the frame of the sash in oppositedirection to the end springs, pivot-pins passing through said stiles andsaid middle spring and connecting the vertically-movable stile and theframe of the sash, whereby said sash may be tilted in any position,substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname in presence of the subscribing Witnesses.

ARCIIIBALD Ii. BOLLES.

lVitnesses:

SAML. J. COHEN, EVERETT T. CHAPPELL.

